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面向大数据的分布式存储与访问优化框架

通信电源技术 2024年第7期41卷 225-227页

作者：马洒尹孟洋南阳科技职业学院河南南阳474150

文章针对大数据时代的存储与访问挑战,提出一种面向大数据的分布式存储与访问优化框架。提出总体框架设计,明确了分布式存储与访问系统的整体架构和功能模块。针对数据存储问题,研究了数据压缩和存储技术的优化方法,以提高存储效率和数... 详细信息

文章针对大数据时代的存储与访问挑战,提出一种面向大数据的分布式存储与访问优化框架。提出总体框架设计,明确了分布式存储与访问系统的整体架构和功能模块。针对数据存储问题,研究了数据压缩和存储技术的优化方法,以提高存储效率和数据可靠性。针对分布式访问问题,研究了基于负载均衡的数据访问优化方法,以提高系统的整体性能和吞吐量。通过分析和讨论,探讨了方法的特点和改进空间,为分布式存储与访问技术的进一步研究提供了参考。

关键词：大数据分布式存储小波变换负载均衡

Rare earth metal as a dopant element:Cerium ion as an articulator in hexavalent chromium removal by magnetic iron oxides

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Journal of Rare Earths 2023年第10期41卷 1616-1626,I0006页

作者： Pricila maria Batista Chagas maísa M.M.Lima Aline Aparecida Caetano Lucas Bragança Carvalho Nayra maria de Abreu Piva maria Eduarda Resende Luiz Iara do Rosário Guimarães Laboratory of Environmental Catalysis and New materials Department of ChemistryFederal University of LavrasCEP 37200-900LavrasMGBrazil Department of Viticulture&Enology University of CaliforniaDavisCA95616USA Institute of Science and Technology São Paulo State University18087-180SorocabaBrazil

This study highlights introducing the rare earth metal cerium(Ce(Ⅳ))into the structure of magnetite(Fe_(3)O_(4))to achieve enhanced adsorptive properties for the removal of chromium(Cr(VI))from an aqueous medium.Different ratios of Ce(Ⅳ)were introduced into the iron oxide matrix,termed FeCe-5,FeCe-10,and FeCe-20.Their numerical values correspond to the nominal content of the dopant element added to the synthesis medium.The solid materials were characterized for morphology and chemical structure,and N_(2)physical adsorption/desorption measurements were performed.The solid materials doped with Ce(IV)have a high surface area compared to Fe_(3)O_(4),and the solid material with the highest content of the dopant ion(Ce(IV))has a 4-fold greater surface area.This increase in the dopant content in the iron oxide structure leads to a total chromium removal of 93.3%.Isotherms studies on the solid materials show that chromium adsorption follows the Langmuir model.The adsorption capacity to Fe_(3)O_(4)is 12.59 mg/g and FeCe-10 is 22.49 mg/g at 35℃.By fitting the kinetic and isothermal models,it is found that for the Fe_(3)O_(4)and FeCe-10 materials Cr(VI)removal occurs in very different ways,attributed to the different surface areas and compositions of the oxide,with the formation of the goethite(α-FeOOH)phase.The FeCe-10reuse process was performed and the removal capacity the Cr(VI)is reduced after the first cycle.This result is attributed to a strong and irreversible adsorption of Cr(VI)on the FeCe-10.

关键词： Bimetallic oxides Fe-Ce interaction Oxygen vacancies Adsorption Cr(Ⅵ) Rare earths

数字技术冲击下的全球经济治理与中国的战略选择

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经济学家 2022年第5期 48-57页

作者：马飒黄建锋南通大学经济与管理学院南通大学江苏长江经济带研究院

数据跨国流动已成为数字时代世界经济运行的重要微观基础,数字技术改变了生产方式,从而引发国际产业分工格局重塑与国际贸易新趋势。在数字技术冲击下,全球经济治理的客体、手段及主体的内涵发生了深刻变化,全球经济治理面临多重现实困... 详细信息

数据跨国流动已成为数字时代世界经济运行的重要微观基础,数字技术改变了生产方式,从而引发国际产业分工格局重塑与国际贸易新趋势。在数字技术冲击下,全球经济治理的客体、手段及主体的内涵发生了深刻变化,全球经济治理面临多重现实困境:治理理念难以形成共识,有效的多边数字经济治理框架仍有待探索,现有多边经济治理机制改革滞后。重塑全球经济治理体系已成为数字时代世界经济发展的客观需求。中国应结合自身在国际权力结构中的相对地位以及国际环境的深刻变化作出相应战略选择。

关键词：数字技术全球经济治理世界经济战略选择

数字技术重塑国际产业分工格局:理论逻辑与中国战略

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江海学刊 2023年第5期 113-122,255页

作者：马飒张二震南通大学经济与管理学院南京大学长江三角洲经济社会发展研究中心

科技革命是国际分工深化的重要推动力。作为新一轮科技革命的核心,数字技术具有高渗透性、技能偏向性以及显著的网络效应,其广泛应用将引发要素投入结构与生产方式的重大变革,弱化低技能劳动力在生产中的重要性,从根本上动摇现有的“资... 详细信息

科技革命是国际分工深化的重要推动力。作为新一轮科技革命的核心,数字技术具有高渗透性、技能偏向性以及显著的网络效应,其广泛应用将引发要素投入结构与生产方式的重大变革,弱化低技能劳动力在生产中的重要性,从根本上动摇现有的“资本、高技术+低技能”国际分工模式的基础。国际产业分工将出现产业分化与融合并存、平台化与弹性化增强、数字跨国公司主导力量崛起以及国家间分工地位分化加剧等趋势,以廉价的低技能劳动力参与国际分工的国家面临被边缘化的风险。中国应采取积极主动的应对战略,包括做强做优做大数字经济、重塑人才培养机制、主动参与全球数字治理、扩大服务业开放等。

关键词：数字技术科技革命国际产业分工格局

Integrated Network management System for CSL

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ZTE Communications 2010年第2期8卷 51-54页

作者： Yi sa ma Zhiyong Network management Product Department of ZTE Corporation Chengdu 610041 P. R. China

CSL is a subsidiary of Australia＇ s Telstra Corporation and is the biggest mobile operator in Hong Kong. In march 2008, CSL contracted ZTE to evolve its existing mobile network into a new all-IP mobile network. To reduce the high Operating Expense （OPEX） of network operation and maintenance, CSL sought an Integrated Network management System （INMS） to consolidate alarms from various network segments, and to improve network operation and maintenance efficiency. ZTE provided CSL with an integrated network solution based on Software Defined Radio （SDR） soft base stations. The SDR solution supports upgrade to High Speed Downlink Packet Access （HSDPA＋） and enables a smooth transition to a Long Term Evolution （LTE） network.

关键词： CSL Network management System mobile network Software Defined Radio maintenance Integrated operation smooth transition solution High Speed provided high improve SDR Access based soft OPEX Long INMS

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基于贝叶斯估计的软件可靠性综合评估模型

兵工学报 2008年第4期29卷 440-445页

作者：马飒飒宁如云军械技术研究所河北石家庄050003 军械工程学院基础部河北石家庄050003

软件可靠性定量评估与预测是软件可靠性工程的重要组成部分。提出利用支持向量机回归分析方法建立基于软件质量度量的软件可靠性预测模型,并将基于贝叶斯估计的现代可信性理论引入该领域,利用可信性因子合理组合基于软件质量度量的软件... 详细信息

软件可靠性定量评估与预测是软件可靠性工程的重要组成部分。提出利用支持向量机回归分析方法建立基于软件质量度量的软件可靠性预测模型,并将基于贝叶斯估计的现代可信性理论引入该领域,利用可信性因子合理组合基于软件质量度量的软件可靠性预测模型和基于失效数据的软件可靠性增长模型的评估结果,从而全面利用与软件可靠性相关的多方面信息,得到更合理的软件可靠性定量评估结果。根据方差分解和最优线性非齐次估计给出基于贝叶斯估计的软件可靠性综合评估模型的数学描述公式,并举例说明可信性因子的求取方法。数据分析表明该模型具有合理性和可行性。

关键词：系统评估与可行性分析软件可靠性支持向量机回归分析贝叶斯估计可信性因子

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军用光学性能检测设备设计与分析

激光与红外 2022年第11期52卷 1695-1700页

作者：张勇马飒飒李志伟田玉敏中国人民解放军32181部队陕西西安710032 河北工业大学控制科学与工程学院天津300131 陆军工程大学武汉士官学校湖北武汉430076

光电装备广泛应用于探测瞄准、跟踪制导、光电火控、夜间侦察,是实施精确打击和一体化信息作战的重要手段。光电装备长时间野外使用受振动冲击、环境骤变等因素影响,难免会出现机构卡滞、零部件故障、轴系失调等主要性能指标下降等问题... 详细信息

光电装备广泛应用于探测瞄准、跟踪制导、光电火控、夜间侦察,是实施精确打击和一体化信息作战的重要手段。光电装备长时间野外使用受振动冲击、环境骤变等因素影响,难免会出现机构卡滞、零部件故障、轴系失调等主要性能指标下降等问题。光学性能检测设备是保证光电装备主要性能指标和作战效能发挥的重要技术手段。简述了外军不同修理层级配备的光学性能检测设备发展现状,提出了适用于光电装备保障的性能检测设备基本设计原则,对宽光谱光学系统结构形式、检测设备环境适应性等关键问题进行了探讨,对军用光学性能检测设备研制与发展有借鉴作用。

关键词：装备保障光学性能检测设备折返式

Enhanced properties of stone coal-based composite phase change materials for thermal energy storage

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International Journal of Minerals,Metallurgy and materials 2024年第1期31卷 206-215页

作者： Baoshan Xie Huan ma Chuanchang Li Jian Chen Key Laboratory of Renewable Energy Electric-Technology of Hunan Province School of Energy and Power EngineeringChangsha University of Science and TechnologyChangsha 410114China State Key Laboratory of Disaster Prevention and Reduction for Power Grid Changsha University of Science and TechnologyChangsha 410114China

Phase change materials (PCMs) can be incorporated with low-cost minerals to synthesize composites for thermal energy storage in building applications.Stone coal (SC) after vanadium extraction treatment shows potential for secondary utilization in composite preparation.We prepared SC-based composite PCMs with SC as a matrix,stearic acid (sa) as a PCM,and expanded graphite (EG) as an additive.The combined roasting and acid leaching treatment of raw SC was conducted to understand the effect of vanadium extraction on promoting loading capacity.Results showed that the combined treatment of roasting at 900℃ and leaching increased the SC loading of the composite by 6.2%by improving the specific surface area.The loading capacity and thermal conductivity of the composite obviously increased by 127%and 48.19%,respectively,due to the contribution of 3wt% EG.These data were supported by the high load of 66.69%and thermal conductivity of 0.59 W·m^(-1)·K-1of the designed composite.The obtained composite exhibited a phase change temperature of 52.17℃,melting latent heat of 121.5 J·g^(-1),and good chemical compatibility.The SC-based composite has prospects in building applications exploiting the secondary utilization of minerals.

关键词： thermal energy storage phase change material stone coal vanadium extraction secondary utilization

Data driven analysis reveals prognostic genes and immunological targets in human sepsis-associated acute kidney injury

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World Journal of Emergency Medicine 2024年第2期15卷 91-97页

作者： Qing Zhao Jinfu ma Jianguo Xiao Zhe Feng Hui Liu Department of Diagnosis and Treatment of Cadres the First Medical CenterChinese PLA General HospitalBeijing 100853China Intensive Care Unit the 305th Hospital of Chinese PLABeijing 100032China Department of Critical Care Medicine the First Medical CenterChinese PLA General HospitalBeijing 100853China Nephrology Department the First Medical CenterChinese PLA General HospitalBeijing 100853China

BACKGROUND:The molecular mechanism of sepsis-associated acute kidney injury(sa-AKI)is unclear.We analyzed co-differentially expressed genes(co-DEGs)to elucidate the underlying mechanism and intervention targets of sa-AKI.METHODS:The microarray datasets GSE65682,GSE30718,and GSE174220 were downloaded from the Gene Expression Omnibus(GEO)database.We identified the co-DEGs and constructed a gene co-expression network to screen the hub genes.We analyzed immune correlations and disease correlations and performed functional annotation of the hub genes.We also performed single-cell and microenvironment analyses and investigated the enrichment pathways and the main transcription factors.Finally,we conducted a correlation analysis to evaluate the role of the hub genes.RESULTS:Interleukin 32(IL32)was identified as the hub gene in sa-AKI,and the main enriched signaling pathways were associated with hemopoiesis,cellular response to cytokine stimulus,inflammatory response,and regulation of kidney development.Additionally,IL32 was significantly associated with mortality in sa-AKI patients.Monocytes,macrophages,T cells,and NK cells were closely related to IL32 and were involved in the immune microenvironment in sa-AKI patients.IL32 expression increased significantly in the kidney of septic mouse.Toll-like receptor 2(TLR2)was significantly and negatively correlated with IL32.CONCLUSION:IL32 is the key gene involved in sa-AKI and is significantly associated with prognosis.TLR2 and relevant immune cells are closely related to key genes.

关键词： Sepsis Acute kidney injury Interleukin 32 Toll-like receptor 2 Bioinformatics analysis